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arXiv 1801.09154hep-phhep-exhep-lathep-thnucl-th
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光阵面全息QCD中广义部分子分布的普适性

Universality of Generalized Parton Distributions in Light-Front Holographic QCD

Guy F. de Teramond, Tianbo Liu, Raza Sabbir Sufian, Hans Gunter Dosch, Stanley J. Brodsky, Alexandre Deur

摘要:

广义部分子分布的结构是从光阵面全息QCD确定的,直到一个通用的重新参数化函数$w(x)$,它结合了小$x$处的Regge行为和$x \to 1$处的包容计数规则。一个简单的分析$w(x)$,它满足这些物理约束与一个单一的参数的结果在精确的描述核子和π夸克分布函数相比,整体拟合。振幅的解析结构导致了与Veneziano模型的联系,从而导致了与Regge理论和强子谱的非平凡联系。

英文摘要:

The structure of generalized parton distributions is determined from light-front holographic QCD up to a universal reparametrization function $w(x)$ which incorporates Regge behavior at small $x$ and inclusive counting rules at $x \to 1$. A simple ansatz for $w(x)$ which fulfills these physics constraints with a single-parameter results in precise descriptions of both the nucleon and the pion quark distribution functions in comparison with global fits. The analytic structure of the amplitudes leads to a connection with the Veneziano model and hence to a nontrivial connection with Regge theory and the hadron spectrum.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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